Red Hat Linux Security Advisories & Vulnerabilities
16013 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
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Pick your distribution release to see every advisory issued for it and its severity mix. Fixes ship as errata, so keep the system patched. This is the release's advisory history, not a per-package scan.
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Red Hat Enterprise Linux errata (RHSA) via the official Red Hat Security Data API — CVE severity, CVSS and affected packages. A credential-free official source.
Latest Red Hat advisories
Medium [CVE-2026-5950] Unbounded resend loop in BIND 9 resolver
Unbounded resend loop in BIND 9 resolver. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-835. Affected package(s): bind-main. Resolved in Red Hat advisory RHSA-2026:20334 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-32792] Packet of death with DNSCrypt
Packet of death with DNSCrypt. Red Hat rates this moderate (CVSS 5.9). Affected package(s): unbound-main. Resolved in Red Hat advisory RHSA-2026:20357 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Critical [CVE-2026-2651] Arbitrary code execution via unauthorized multipart upload access
Arbitrary code execution via unauthorized multipart upload access. Red Hat rates this critical (CVSS 9). Weakness: CWE-1220. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-14164] Double-Free Vulnerability in RAR5 Decompression Logic via dangling filtered_buf pointer in init_unpack()
Double-Free Vulnerability in RAR5 Decompression Logic via dangling filtered_buf pointer in init_unpack(). Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-415. Affected package(s): libarchive-main. Resolved in Red Hat advisory RHSA-2026:30333 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Update Infrastructure 5; Red Hat Discovery 2; Red Hat OpenShift Container Platform 4.22; and 21 more.
Medium [CVE-2026-9358] Denial of Service via uncontrolled recursion in AST Serialization
Denial of Service via uncontrolled recursion in AST Serialization. Red Hat rates this moderate (CVSS 4.3). Weakness: CWE-674. Affected package(s): rust-main. Resolved in Red Hat advisory RHSA-2026:22934 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-43503] propagate shared-frag marker through frag-transfer helpers
propagate shared-frag marker through frag-transfer helpers. Red Hat rates this important (CVSS 7). Weakness: CWE-664. Affected package(s): rhcos, kernel-rt, kernel, kpatch-patch. Resolved in Red Hat advisory RHSA-2026:23470 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: NVIDIA for RHEL 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 17 more.
High [CVE-2026-27136] Cross-Site Scripting via HTML parsing bypass
Cross-Site Scripting via HTML parsing bypass. Red Hat rates this important (CVSS 8.1). Weakness: CWE-79. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-39821] Privilege escalation via incorrect Punycode label processing
Privilege escalation via incorrect Punycode label processing. Red Hat rates this important (CVSS 8.2). Weakness: CWE-1289. Affected package(s): rhacm2/observatorium-rhel9:1782157471, rhacm2/prometheus-alertmanager-rhel9:1782156920, cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9:1782840519, rhacm2/thanos-rhel9:1782465412, rhacm2/grafana-dashboard-loader-rhel9:1782383255, rhacm2/acm-prometheus-config-reloader-rhel9:1782157632. Resolved in Red Hat advisory RHSA-2026:35830 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Container Platform 4.22; RHEM 1.0 for RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); and 124 more.
High [CVE-2026-25681] Arbitrary code execution via Cross-Site Scripting
Arbitrary code execution via Cross-Site Scripting. Red Hat rates this important (CVSS 8.1). Weakness: CWE-79. Affected package(s): opentelemetry-collector, cluster-observability-operator/distributed-tracing-console-plugin-pf6-rhel9:1782839193, cluster-observability-operator/distributed-tracing-console-plugin-pf5-rhel9:1782839981, cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9:1782840519, cluster-observability-operator/logging-console-plugin-pf5-rhel9:1782840539, cluster-observability-operator/monitoring-console-plugin-rhel9:1782838476. Resolved in Red Hat advisory RHSA-2026:34342 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
High [CVE-2026-9256] code execution and denial of service
code execution and denial of service. Red Hat rates this important (CVSS 8.1). Weakness: CWE-122. Affected package(s): nginx, nginx:1.26, nginx-main, nginx:1.24, discovery/discovery-ui-rhel9:1782756541. Resolved in Red Hat advisory RHSA-2026:29874 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: NGINX Plus; NGINX Open Source; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; and 5 more.
High [CVE-2026-9277] Arbitrary code execution via command injection due to unescaped line terminators
Arbitrary code execution via command injection due to unescaped line terminators. Red Hat rates this important (CVSS 8.1). Weakness: CWE-78. Affected package(s): openshift4/ose-console-rhel9:1782308675, cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996, cluster-observability-operator/distributed-tracing-console-plugin-pf5-rhel9:1782839981, openshift-service-mesh/kiali-rhel9:1780916345, cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9:1782840519, quay/quay-rhel8:1781878070. Resolved in Red Hat advisory RHSA-2026:26077 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Developer Hub 1.10; Red Hat Developer Hub 1.9; Red Hat Discovery 2; and 31 more.
High [CVE-2026-44417] Remote Code Execution via untrusted JMS configuration
Remote Code Execution via untrusted JMS configuration. Red Hat rates this important (CVSS 7.5). Weakness: CWE-15. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16; Red Hat JBoss Enterprise Application Platform 8.
High [CVE-2026-44930] org.apache.cxf.services.xkms/cxf-services-xkms-x509-repo-ldap: Apache CXF: Information Disclosure via LDAP Injection
org.apache.cxf.services.xkms/cxf-services-xkms-x509-repo-ldap: Apache CXF: Information Disclosure via LDAP Injection. Red Hat rates this important (CVSS 7.5). Weakness: CWE-90. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16; Red Hat Fuse 7; Red Hat JBoss Enterprise Application Platform Expansion Pack.
High [CVE-2026-39829] Denial of Service via crafted public key with excessive parameters
Denial of Service via crafted public key with excessive parameters. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1284. Affected package(s): advanced-cluster-security/rhacs-roxctl-rhel8:1781686458, advanced-cluster-security/rhacs-roxctl-rhel8:1781686446, buildah. Resolved in Red Hat advisory RHSA-2026:29455 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); Red Hat Enterprise Linux AppStream (v. 9); and 58 more.
High [CVE-2026-39830] Denial of Service via resource leak from unsolicited SSH responses
Denial of Service via resource leak from unsolicited SSH responses. Red Hat rates this important (CVSS 7.5). Weakness: CWE-772. Affected package(s): buildah. Resolved in Red Hat advisory RHSA-2026:29455 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); Red Hat Enterprise Linux AppStream (v. 9); and 54 more.
High [CVE-2026-42508] Revocation bypass via unchecked SignatureKey
Revocation bypass via unchecked SignatureKey. Red Hat rates this important (CVSS 7.4). Weakness: CWE-295. Affected package(s): golang1, advanced-cluster-security/rhacs-main-rhel8:1781686446, advanced-cluster-security/rhacs-main-rhel8:1781686458. Resolved in Red Hat advisory RHSA-2026:23262 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); Red Hat Enterprise Linux AppStream (v. 9); and 48 more.
High [CVE-2026-46595] Authorization bypass due to skipped source-address validation
Authorization bypass due to skipped source-address validation. Red Hat rates this important (CVSS 7.1). Weakness: CWE-303. Affected package(s): multicluster-engine/addon-manager-rhel9:1782160196, multicluster-engine/registration-operator-rhel9:1782160210, rhelai3/bootc-azure-cuda-rhel9:1782758410, golang1, multicluster-engine/work-rhel9:1782159773, multicluster-engine/kube-rbac-proxy-mce-rhel9:1782477094. Resolved in Red Hat advisory RHSA-2026:23262 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.11; and 44 more.
High [CVE-2026-39835] Denial of Service via crafted SSH certificate
Denial of Service via crafted SSH certificate. Red Hat rates this important (CVSS 7.5). Weakness: CWE-476. Affected package(s): advanced-cluster-security/rhacs-roxctl-rhel8:1781686458, advanced-cluster-security/rhacs-scanner-v4-rhel8:1781686458, advanced-cluster-security/rhacs-roxctl-rhel8:1781686446, advanced-cluster-security/rhacs-scanner-v4-rhel8:1781686446, advanced-cluster-security/rhacs-main-rhel8:1781686446, advanced-cluster-security/rhacs-main-rhel8:1781686458. Resolved in Red Hat advisory RHSA-2026:26547 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); Red Hat Enterprise Linux AppStream (v. 9); and 52 more.
High [CVE-2026-39832] Security bypass due to improper handling of key restrictions
Security bypass due to improper handling of key restrictions. Red Hat rates this important (CVSS 8.7). Weakness: CWE-281. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); Red Hat Enterprise Linux AppStream (v. 9); and 40 more.
High [CVE-2026-39828] Unauthorized command execution via discarded SSH permissions
Unauthorized command execution via discarded SSH permissions. Red Hat rates this important (CVSS 8.8). Weakness: CWE-281. Affected package(s): advanced-cluster-security/rhacs-roxctl-rhel8:1781686458, advanced-cluster-security/rhacs-roxctl-rhel8:1781686446. Resolved in Red Hat advisory RHSA-2026:26547 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.11; Red Hat Advanced Cluster Security for Kubernetes 4.9; and 47 more.
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